Centrifugal separator.



PATENTED DEC. 12, 1905;

J. J. BBRRIGAN. OBNTRIFUGAL SEPARATOR.

APPLICATION FILED MA'R.1,1904.

ANDREW. a can-um 00.. PHO'O-UIMCGRAPHERS \vasmuewm n. c.

UNITED srA rns PATENT OFFICE.

JOHN JOSEPH BERRIGAN, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO FRANCIS J. AREND, OF NEW YORK, N. Y., AND JOHN BERNSTROM, OF

STOGKHOLM, S WEDEN.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed March 1. 1904. Serial No. 196.058.

To all whom it may concern:

Be it known that I, J OHN Jos PH BERRI- GAN, of East Orange, Essex county, New J ersey, have invented a new and useful Improvement in Centrifugal Separators, of which the following is a specification.

In another application for Letters Patent, Serial No. 193,147, filed by me February 11, 1904, I have fully described and broadly claimed a new machine for separating solids and liquids, wherein the liquid is drawn off by decantation from the inner surface of the deposit formed by centrifugal force on the circumferential wall of a rotary vessel, while the solids are conveyed from said deposit longitudinally said vessel over a dry space therein and finally ejected at a distance from their place of entry.

My present invention consists in the construction of the centrifu al machine described, wherein the aforesaid principle is carried into effect, as more particularly hereinafter pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal section of the machine. Fig. 2 is a transverse section on the line 1 1 of Fig. 1.

Similar numbers of reference indicate like parts.

-2 is the bed-plate, on which are disposed two fixed standards 3.and 4.

5 is the rotary separating vessel, disposed on an axis of rotation inclined to the horizontal. Said vessel is supported on hollow trunnions 6 and 7, disposed in inclined journals' in the standards 3 and 4.

8 is the feed-hopper for the combined materials to be separated, the lower part of which communicates with the feed conduit 9, which extends through the hollow trunnion 7 and also the head 10 of the separating vessel 5. On the inner side of said head is a cylindrical block 11, having within it a prolonation 12 of the feed-conduit 9, the said proongation extending from the center of the head 10 and being curved radially inward, so as to deliver the material against the circumferential wall of the separating vessel. 13 is a shaft carrying the spiral conveyer 14 within said vessel. Said shaft 13 has one end journaled in the box 11 and extends outward through the hollow trunnion 6 and also through the hub of the beveled gear-pinion 15, which is fast upon said trunnion. Upon the end of shaft 13 is a beveled pinion 16.

17 is the driving-pulley for the machine, fast on a shaft 18, journaled in the standard 4. Said shaft carries beveled pinion 19 engaging with pinion 16, and another beveled pinion 20, engaging with pinion 15. The arrangement of the beveled gearing 15, 16, 19, and 20 is simply a differential gear for rotating the conveyer 14 and the separating vessel 5 at different rates of speed. The liquidoutlet is formed in the head 10 at 21, and the liquid passes therefrom into a box 22, stationary on the bed-plate, and thence roceeds to the final outlet 23. The outlet for solids is shown at 24, and this communicates with a box 25, having its upper part suitablyinclined to surround the end of the separating vessel and provided with a final outlet 26.

The operation of the machine as a whole is as follows: The combined materials to be separated being placed in thehopper 8 pass by the conduit 9 and duct 12 into the lower portion of the inclined separating vessel 5. They are then thrown by centrifugal force to form a ring around the interior of said lower end. The liquid (represented at 27) escapes through the outlet 21, and so to the box 22 and outlet 28. The solid materials are engaged by the conveyer 14 and carried along the inner wall of the separating vessel to the outlet 24, whence they pass to box 25 and outlet 26. It will be noticed that in this construction the separating vessel is a true cylinder and need not be conical, as is preferably the case when the vessel rotates on a horizontal instead of an inclined axis.

I claim- 1. In a machine for separating solids and liquids, a rotary separating vessel having a feed-inlet at one end and an outlet for solids at the other end, the said inlet end of said vessel being below the said outlet end, and means within said vessel for conveying said solid material to said outlet; the said vessel having a liquid-escape opening disposed between its circumferential wall and its axis of rotation.

2. In a machine for separating solids and liquids, a separating vessel rotary on an inclined axis and having a feed-inlet at one end and an outlet for solids at the other end, the said inlet end being below the said outlet end and means within said vessel for conveying said solid material to said outlet; the said vessel having a liquid-escape opening disposed between its circumferential wall and its axis of rotation.

3. In a machine for separating solids and liquids, a cylindrical separating vessel rotary on an inclined axis and having a feed-inlet centrally disposed in its lower head and an outlet for solids and means Within said vessel for conveying solid material to said outlet; the said vessel having a liquid-escape opening disposed between its circumferential wall and its axis of rotation.

4. In a machine for separating solids and liquids, a separating vessel rotary on an inclined axis, a feed-inlet conduit extendin through the lower head thereof and turne at an angle to said axis of rotation, and means within said vessel for conveying said solid material to an outlet; the saidvessel havinga liquid-escape opening disposed between its circumferential wall and its axis of rotation.

5. In a machine for separating solids and liquids, a separating vessel rotary on an inclined axis and having an outlet for solids in its circumferential wall, and near its upper end, afeed-inlet at the lower end, and a liquidescape opening disposed between its said Wall and its axis of rotation, and a rotary screw conveyer within said vessel.

6. In a machine for separating solids and liquids, a separating vessel rotary on an inclined axis and having an outlet for solids in its circumferential wall, and near its upper end, a feed-inlet at the lower end and a liquidescape opening disposed between its said wall and its axisof rotation, a rotary screw conveyer within said vessel and means forrevolving said conveyer and said vessel at different rates of speed.

In testimony whereof I have signed my name to this specification in the presence of two subscribin Witnesses.

J OH JOSEPH BERRIGAN. Witnesses:

WM. H.-SIEGMAN. I. A. VAN WART. 

